if three molecules of tetrodotoxin have a mass of 1.59x10-21grams, what is the molecular formula of tetrodotoxin?

Which is the most likely way an automotive engineer would use chemistry

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?